Tire.



T. MIDGLEY, SR.

TIRE.

APPLICATION FILED ocT. 29. I9I4.

l 1 59,244, Patented Nov. 2, 1915.

UNITED STATES PATENT OFFICE.

THOMAS MDGLEY, SR., OF LANCASTER,l OHIO, ASSIGNOR TO T HE MIDGLEY TIRE & RUBBER COMPANY, OF LAN OASTEB, OHIO, A CORPORATION OF WEST VIRGINIA.

TIRE.

Specication of Letters Patent.

Patented Nov. 2,1915.

To all whom z't may concern Be it known that I, THoMAs MIDGLEY, Sr.,

a citizen of the United States, residing at Lancaster, in the county'of Fairfield and State of Ohio, have invented certain new and useful Improvements in Tires, of which the following is a specification.

My invention relates to the improvement of vehicle tires 4and contemplates particularly the provision of a non-skid tread portion for rubber or other composition tires used particularly upon motor vehicles.

In this connection, my invention consists in the use of a peculiarly constructed supplemental resistance element to be embedded in the tread of the tire itself in such manner that it will present itself in a manner to have a gripping engagement with the road bed as the vehiclemoves along.

Therefore, the main object of my invention resides in the provision of a tire structure wherein there is embedded in the tread a'plurality of whorls, these whorls being themselves formed of a wire whose form or shape presents a structure which will itself prevent turning of these whorls about their axes as a center when they are thus ernbedded. y'

Another obiect of my invention resides in the provision of a plurality of wire whorls, these whorls being of such shape in cross section that when the wire unit from which they are made is previously axially twisted they will present a conformation preventing their turning about their axes as a center when they are embedded in a tire tread. Itis known that these metallic or other whorls do not reatlilv bind or vulcanize themselves to the body of the tire itself and consequently, after the tread portion has become slightly worn, these whorls may be readily removed Aby their turning about their own axes, particularly upon their catching in the road. This latter is true where these whorls themselves have not been so shaped to guard against this accidental removal priorto their placement in the tire.

The preferred embodiment 'of my invention is shown in the accompanying sheet of drawings, in which similar characters of reference designate corresponding parts, and-in which:

Figure 1 is a central vertical section through a tire casing showing my improved non-skid arrangement. Fig. 2 is a transverse section of the structure shown in Fig. 1, and, Fig. 3 is an enlarged detail view showing a portion of the coil used before its placement in the tire or tread.

My invention is applicable to all types of y tires wherein a rubber or similar composition is used, whereby a resilient effect may be had.

In the drawings, I have shown my invention applied to a rubber casing for forming a portion of pneumatic tires, Ithis casing being shown at l and having a plurality of coils of wire 2 circumferentially embedded therein. These coils may be placed flush with the road engaging portion, or they may be placed either slightly below this surface or slightly above this surface as may be desired. Where they are placed slightly under the road engaging surface.. the wear aft-er a short time will cause their appearance 'on the outer surface of the tread'itself, or if they are so placed to project slightly beyond lthe road engaging surface, the exposed portions may be removed in any desiredv manner. In all events, after a. certain amount of wear, the outside portions of each of the whorls forming| these coils, will be worn away leaving a plurality of detached whorls in the tire itself as opposed to continuous coils, as shown. In order that these whorls may not work themselves out by the action of. the tire when passing over obstructions in the road due to its inflated condition or through other sources. I have so shaped the wire from which these coils are made, that they present a conformation in cross section preventing this turning. Specifically, these wires, are shown as being formed from asquare piece of wire in cross section as is indicated at 3, this wire then twisted to assume a thread-like appearance, the twists being` shown at 4 and finally formed to the coil polygonal cross sectional shape, the composition forming the tire forces it way into all of the irregular shapes presented and in shape as shown. By this l this manner prevents the easy removal of 11o the whorls after a portion of the coils have been worn away. i

From the foregoing description, it willi be apparent that lt have overcome the pos-Y sibility of the easy removal oi the nlioris embedded in the tire by the provision off Wires or Wire units so shaped in cross sec` tion that, when twisted, they present a conformation preventin natural movement of the whorls about their own axes.

What ii claim, is:

l. A resilient tire comprising an annular body portion, posed in the tread portion of said body, said whorls beingI formed of a wire the shape of which is such as will prevent their turning about their own axes when einbedded'in said tread.

2. A resilient tire comprising an annularbody portion, and a plurality ot whorls disposed in the, tread porticn'ot said body, vsaid whorls being formed of a Wire unit twisted axially to present a conformation vpreventf ,ing the whorls turning about their axes when embedded in saidstread.

3. A. resilient tire com rising an annular body portion, and a p iirality of whorls disposed in the tread portion of said body,

said whorls being formed oi a wire onni- .formation of the whorls preventin turning about theiraxes when einbe ded in and a plurality of Whorls dismensen form cross-section throughout its length brit twisted about its own axis to present a gon t ieir said tread. j

'whorls ot said coil about their axes when embedded .in said tread.

ti.. A resilient tire comprising an'annular body portion. and a helical coil or Wire einlbeddedin the tread portion of said body,

said wire being of polygonal shape in cross section and twisted to present 'a thread-like appearance. l v

iin testimony` whereof li affix iny signature in presence oi two witnesses.

THOMAS MDGLEY, Sn., Xi/Vitnesses:`

G., A.S'i'nrirnnson,

D, Winninsorh 

